Soot blower



March 8, 1938. N. SNOW ET AL 2,110,532

SOOT BLOWER Original Filed Dec. 27, 1932 Patented Mar. 8, 1938 UNITED STATES PATENT OFFICE SOOT BLOWER Application December 27, 1932, Serial No. 649,104 I Renewed October 18, 1937 6 Claims.

moving the blower element, and an improved,

means for disposing of the fluid discharged from this mechanism.

The above and numerous other objects and advantages of this invention will become more apparent as the following description proceeds, particularly when reference is had to the accompanying drawing wherein:

Fig. l is a side elevational View partly in section of a soot blower constructed in accordance with the teachings of this invention;

Fig. 2 is a View similar to Fig. 1, showing a slightly modified form of construction; and

Fig. 3 is a view similar to Fig. 1 showing a still further modified form of construction.

In the cleaning of fluid heaters such as boilers and the like it is customary to provide a blower element or pipe having discharge openings or nozzles through which a cleaning fluid supplied to the pipe may be discharged adjacent the portions of the fluid heater to be cleaned. The cleaning fluid used may be steam, air, or any other similar fluid which is supplied to the blower ele- QO ment under pressure.

In general, it is the custom to mount these blower pipes for movement so that the jets of cleaning fluid discharged therefrom may be directed adjacent different portions of the fluid heater to be cleaned. The present invention is directed more particularly to a construction in which a fluid actuated motor, of any desired character, is arranged to move the blower element and in which provision is made to conduct the fluid discharged from the fluid motor through the fluid heater wall for discharge into the interior of the fluid heater.

Referring then particularly to the drawing, wherein like reference characters designate cor- 5 responding parts throughout all views, the numeral 25 designates a blower element which projects through an opening 26 in the wall 21 of a fluid heater (not shown). In accordance with the usual practice, a wall box 28 is preferably mounted in the opening 26, the blower element passing through the opening in the wall box as illustrated.

It will be understood that the blower element 25 is adapted to be supplied with cleaning fluid and that the portion of the blower element which projects into the fluid heater is provided with a plurality of discharge nozzles (not shown) for discharging cleaning fluid adjacent the portions of the fluid heater to be cleaned. Exteriorly of the fluid heater the blower element has its end suitably journalled in one end of a gooseneck il the other end of this gooseneck being suitably secured to a supply pipe shown in Fig. 2 and designated by the reference character 32. A

valve, designated generally by the reference ,character 33 is disposed in the gooseneck adjacent the lower end thereof, and controls the flow of cleaning fluid from the supply pipe to the goo'seneck and thus to the blower element.

While the valve 33 may be actuated in any desired manner, it is preferably actuated in timed relation to the rotation of the blower ele ment in accordance with the usual practice. For this purpose there is provided a cam 36 fixed for rotation with the blower element and arranged to actuate the stem 31 of a pilot valve 38. This pilot valve may be in the nature of a three-way valve of standard construction being suitably connected to a source of fluid under pressure and an exhaust. The arrangement is such that when the valve stem 3'! is depressed by the cam 36, the valve 38 is actuated to admit fluid under pressure above piston 39 in cylinder 40. This depresses the piston 39 and causes the stem ll thereof which is secured to the main. valve to open the latter thus admitting cleaning fluid from the supply pipe to the 'gooseneck. It will be understood that the cam 36 is provided with a cut out portion so that during a portion of the rotation of the blower element the valve 33 is permitted to close.

For the purposeof rotating the blower element 25, there is provided a suitable fluid act-u ated motor which may be of any desired character. Since the structure of this fluid motor forms no part of the present invention, only the housing 240 which encloses the motor is illustrated in the drawing, it being understood that the motor is suitably connected to the blower element in any desired manner to rotate the same.

Fluid under pressure for rotating the mot-or is supplied to the same from any suitable source by a conduit 245 While the fluid exhausted from the motor is con-ducted away from the housing 2M) by a conduit 241 The housing 240 is suitably secured to the wall box 28 as by the bolts 5t, while the interior of the housing is provided with suitable fluid intake and exhaust passages (not shown), which communicate with the fluid supply and exhaust passages 246 and 241 respectively.

As illustrated the wall box 28 is provided with an enlarged portion 210, and a passage 21! is formed in this portion. One end of the passage 2H is placed in communication with the pipe 241 while the other end of this passage is arranged to discharge into the space between the wall box and the blower element. Thus the exhaust from the fluid motor will be conducted directly to the wall box and thus through the boiler setting.

In this embodiment of the invention means is provided for indicating whether or not cleaning fluid is being supplied to the blower element. For

this purpose a cylinder 215 is placed in communication with the gooseneck 3N by a pipe 216. A piston 21! located within the cylinder is normally held in its lowermost position by a spring 218. When, however, cleaning fluid under pressure is admitted to the gooseneck, this fluid acts through connection 216 to force the piston 21'! upwardly against the force exerted by spring 218.

Secured to the piston 21! is a stem 2'l9 arranged to close a switch 280, this switch being normally held open by a spring 281. This switch controls the energization of a suitable alarm 282 which may be a light, bell, or the like.

It will be apparent that whenever cleaning fluid under pressure is supplied to the gooseneck, the piston 21'! will be moved to close switch 28! and thus energize signal 282. Thus, by reference to this signal, the operator may be advised whether or not cleaning fluid is being supplied to the blower element.

In Fig. 2 there is disclosed a construction quite similar to that disclosed in Fig. 1 in that the fluid motor is housed in a casing 240* suitably secured to the wall box 28*. Fluid under pressure is supplied to the fluid motor by way of a supply pipe 246 the supply pipe being tapped into the side of the casing.

In this embodiment of the invention the exhaust from the fluid motor is conducted to the wall box by a passage 285 cast in the housing 240 Obviously, the exhausting fluid will flow through the passage 285 and into the space between the inner surface of the wall box and the outer surface of the blower element, the exhaust fluid flowing through the wall box to the combustion chamber.

Fig. 3 shows a still further means of disposing of the exhaust from the fluid motor. By reference to this figure it will be noted that a passage 285 is cast in the casing 240". In this embodi ment, however, the passage 285, instead of discharging directly into the wall box, discharges into a passage 28-6 formed in one side of the wall box. It will be understood that the passage 285 extends entirely through the boiler wall 2! so that the discharged fluid will be conducted to the combustion chamber.

From the above it will be apparent that the invention provides a movable blower element, a fluid actuated mechanism for moving this blower element, and means for conducting the fluid discharged from this fluid actuated mechanism to the interior of the fluid heater. Thus the fluid discharged from the fluid motor is effectively disposed of and is prevented from exhausting into the room in which the fluid heater is located.

While several embodiments of the invention have been described with some detail, it is to be understood that the description is for the purposes of illustration only and is not definitive of the limits of the inventive idea. The right is reserved to make such changes in the details of construction and arrangement of parts as will fall within the purview of the attached claims.

What we claim as our invention is:

1. In a fluid heater cleaner, the combination with a fluid motor located exteriorly of the fluid heater setting, a wall box mounted in the fluid heater setting, and a blower element projecting through said wall box and so connected to said fluid motor as to be driven thereby, of means including a passage formed in the casing of said fluid motor in communication with the wall box for conducting the discharge from the fluid motor to the said wall box.

2. In a fluid heater cleaner, the combination with a wall box mounted in the fluid heater setting, a blower element projectingthrough said wall box, and a fluid motor located exteriorly of said setting and connected to said blower element for driving the same, of means providing a passage extending longitudinally of said wall box through one side thereof, and means for conducting to the said passage the exhaust from the fluid motor.

3. In a fluid heater cleaner, the combination with a wall box mounted. in the fluid heater setting, a blower element, a passage in said wall box through which the blower element projects from the exterior to the interior of the fluid heater setting, a fluid motor located exteriorly of the setting and connected to the blower element to drive the element, a casing enclosing the fluid motor, a second passage formed in the wall box, and a connection between said last named passage and the casing to' provide for the conduction of exhaust from the fluid motor to the wall box.

4. In a fluid heater cleaner, the combination with a wall box mounted in the fluid heater setting, a blower element projecting through said wall box, and a fluid motor located exteriorly of said setting and connected to said blower element for driving the same, of means providing a passage extending longitudinally of said wall box through one side thereof, and means providing a passage in the casing of said fluid motor, said last mentioned passage communicating with the passage in said wall box for conducting the discharge from the fluid motor to the passage through the wall box.

5. In a fluidheater cleaner, the combination with a fluid heater wall, a wall box mounted in the fluid heater wall and providing a passage through the wall, a blower element projecting beyond said wall box, and a fluid motor located exteriorly of the fluid heater wall and connected to the blower element for driving the same, of a casing for said fluid motor secured directly to the wall box and closing the outer end thereof, I

motor is conducted through the fluid heater wall. K

6. In a fluid heater cleaner, the combination with a fluid heater wall, a wall box mounted in the fluid heater wall and providing a passage through the wall, a blower element projecting through said wall box and a fluid motor located exteriorly of the fluid heater wall and connected to the blower element for driving the same, of a casing for said fluid motor connected directly to the wall box and closing the outer end thereof, and means providing an exhaust passage for the fluid motor in the casing, said exhaust passage communicating directly with the passage through the wall box whereby the exhaust from the fluid motor is conducted through the fluid heaterwall.

NORMAN L. SNOW. WILLIS. P. THOMAS. HARRY E. BRELSFORD. CURTIS L. HOWSE. FRANK BOWERS. 

